What’s HERE: Biltwell’s Builder Exhaust Kit is exactly what its name implies: a selection of pre-fabbed 1.75″ O.D. tubing, header flanges and exhaust tips that puts the art of custom exhaust building in the hands of backyard fabricators. Each Builder Exhaust Kit includes the following:

– All tubing measures 1.75″ O.D.
– Four 16-inch-long (350mm) straight sections
– Two 3.5-inch radius (90mm) U-bends with straights
– Two 5-inch radius (134mm) U-bends with straights
– Two Evolution flanges
– Two Shovelhead flanges
– Two Ironhead flanges
– Two STD flanges
– Two fishtail tips

SURFACE FINISH: All raw tube sections are pre-polished to make chroming after joint finishing easier.

Want to build a custom exhaust for your Evo? This exhaust flange set is exactly what you need; cut it in half and you have a pair of flanges and the perfect start on those custom exhaust pipes that are bouncing around in your mind.

This flange set measures 8″ long and the tubing is 16-gauge 1.75″ diameter.

Want to build a custom exhaust for your Ironhead Sportster? This exhaust flange set is exactly what you need; cut it in half and you have a pair of flanges and the perfect start on those custom exhaust pipes that are bouncing around in your mind.

This flange set measures 14.75″ long and the tubing is 16-gauge 1.75″ diameter.

Want to build a custom exhaust for your Panhead? This exhaust flange set is exactly what you need; cut it in half and you have a pair of flanges and the perfect start on those custom exhaust pipes that are bouncing around in your mind.

This flange set measures 14.75″ long and the tubing is 16-gauge 1.75″ diameter.

Want to build a custom exhaust for your Shovelhead? This exhaust flange set is exactly what you need; cut it in half and you have a pair of flanges and the perfect start on those custom exhaust pipes that are bouncing around in your mind.

This flange set measures 8″ long and the tubing is 16-gauge 1.75″ diameter.